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ZeroAssoluto
Joined: 05 Feb 2017
Posts: 940
Location: Rimini, Italy
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 Posted: Mon Nov 15, 2021 8:47 am Post subject: Nov 15 VH |
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Hi everyone,
| Code: |
+-------------+-------------+------------+
| 3 7 129 | 169 169 5 | 249 49 8 |
| 19 8 4 | 3 7 12 | 29 5 6 |
| 6 5 29 | 49 8 24 | 1 3 7 |
+-------------+-------------+------------+
| 2 469 7 | 146 3 148 | 49 1489 5 |
| 8 46 5 | 2 16 9 | 7 14 3 |
| 149 3 19 | 47 5 478 | 6 489 2 |
+-------------+-------------+------------+
| 5 19 3 | 179 2 17 | 8 6 4 |
| 49 2 8 | 5 49 6 | 3 7 1 |
| 7 14 6 | 8 14 3 | 5 2 9 |
+-------------+-------------+------------+
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Play this puzzle online at the Daily Sudoku site
| Quote: | XY-Wing 1,2,9 in r2c16,r3c3 and -2 in r3c6
or
W-Wing 2,9 in r2c7,r3c3 SL with number 2 in r1c37 and -9 in r2c1 |
Ciao Gianni |
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TomC
Joined: 30 Oct 2020
Posts: 358
Location: Wales
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| Posted: Mon Nov 15, 2021 10:22 am Post subject: |
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r1c3 <> 1
As then r2c1=9, r2c7=2 which gives in row 1 <69> and <49> pairs and no room for a <2>
Or you could treat it like a sort of W wing giving no <9> in box 3 |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Mon Nov 15, 2021 10:46 am Post subject: |
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The fact that you have conflicting NPs in the same row is contradiction enough ! QED
Maybe go for the jugular and just say r2c1 can not be 9 because of the NP’s. ? |
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TomC
Joined: 30 Oct 2020
Posts: 358
Location: Wales
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| Posted: Mon Nov 15, 2021 7:01 pm Post subject: |
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Yes the not 9 in r2c1 has a better symmetry
//1-<69>
9
\\2-<49> |
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Mogulmeister
Joined: 03 May 2007
Posts: 1151
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| Posted: Mon Nov 15, 2021 9:21 pm Post subject: |
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| I think that’s the first time I’ve ever seen a double NP contradiction. |
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